The Incas—a civilization that ruled over vast swathes of South America's Andean region in the 15th and 16th centuries—intentionally built Machu Picchu, and other cites, in a location where tectonic ...

A stargazer from the northern hemisphere is overwhelmed by the strange splendor of the southern skies. Southern constellations don’t contain the fascinating myths and stories of their northern ...

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Global warming is not necessarily always bad. A 400-year warm spell in South America fueled the Incas’ rise, British archaeologists reported Monday, helping them build the largest empire that ever ...

Machu Picchu, the "lost city of the Incas," was not a true city but rather a pilgrimage center symbolically connected to the Andean vision of the cosmos, an Italian study has concluded. According to ...